package cn.skyquant.quant4j.sdk.util.digest;

import java.security.MessageDigest;

/**
 * Created by harley-dog on 2016/11/24.
 */
public class MD5 {
    /**
     * MD5转换
     * @param source 原始字符串
     * @return MD5后的字符串
     */
    public static final String encrypt(String source){
        MessageDigest md5 = null;
        try{
            md5 = MessageDigest.getInstance("MD5");
        }catch (Exception e){
            return "";
        }
        char[] charArray = source.toCharArray();
        byte[] byteArray = new byte[charArray.length];

        for (int i = 0; i < charArray.length; i++){
            byteArray[i] = (byte) charArray[i];
        }
        byte[] md5Bytes = md5.digest(byteArray);
        StringBuffer hexValue = new StringBuffer();
        for (int i = 0; i < md5Bytes.length; i++){
            int val = ((int) md5Bytes[i]) & 0xff;
            if (val < 16){
                hexValue.append("0");
            }
            hexValue.append(Integer.toHexString(val));
        }
        return hexValue.toString();
    }

    public static final boolean verify(String source,String md5str){
        String md5entrystr = encrypt(source);
        return md5entrystr.equals(md5str);
    }
}
